Noise Sensor 30-130dB Omnidirectional Environment Sound Level Meter for Industrial DC9-30V YGC ZS KV V1 (1-5V Output) Item Type: Noise Sensor Material: Aluminum Alloy Length: Approx. 292mm / 11.5in Power Supply: DC 9-30V Sensitivity: -38±3dB (or 12.6mv/Pa) Measurement Range: 30-130dB (A) Resolution: 0.1dB Accuracy: ±3dB, at 23±5℃ ambient temperature, frequency weighting compliant with IEC 61672 type 2 standard, calibrated with input signal of 94dB (1kHz) Frequency Range: 20Hz to 12.5kHz Response Time: 200ms, time response simulates human auditory response Calibrator: for B and K, multi function sound calibrator, model 4231 Microphone: Polarized microphone Directionality: Omnidirectional Microphone Size: 0.5 inch Load Capacity: ≤350Ω for current output impedance when powered by DC12V ≤900Ω for current output impedance when powered by DC24V ≥1KΩ for voltage output impedance Maximum Power Consumption: 500mW Operating Environment: Temperature -40℃ to 80℃, humidity ≤100%RH without condensation IP Rating: IP55 Troubleshooting: Incorrect display value on the instrument during output. Possible reasons include wiring issues or communicating port faults causing incorrect data retrieval. Check if the wiring is correct and secure, if the communicating port is occupied, and if the port settings are correct. Wiring: Red: Power Positive; Black: Power Negative; Yellow: Signal Weight: Approx. 418.00g / 14.74oz